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[DTG Pretreatment] Pretreatment Staining The T Shirts

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  • 1 Post By Ghoster32111
  • 1 Post By nate67bus
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Old 1 Week Ago May 10, 2019 5:06:49 AM -   #1 (permalink)
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Default Pretreatment Staining The T Shirts

Hi,
Relatively new to DTG printing.


We have a Epson FC2100 that we have been using for 3 months now.


I have been having issues with the pretreament leaving a stain (not press mark) around the edges of where the garment have been cured.
(Please see pics attached)


It's as if the curing is pushing the liquid in the pretreat to the outside of the heated area & pooling there to create a stain.


Has anyone here experienced this or have ideas on how to combat.


Thanks
Steve
 
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Old 1 Week Ago May 10, 2019 5:09:26 AM -   #2 (permalink)
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Default Re: Pretreatment Staining The T Shirts

Dont think my iages have attached...so reattached here.
 
Old 1 Week Ago May 10, 2019 5:10:36 AM -   #3 (permalink)
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Default Re: Pretreatment Staining The T Shirts

Are these full cotton?
 
 
Old 1 Week Ago May 10, 2019 6:12:18 AM -   #4 (permalink)
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Default Re: Pretreatment Staining The T Shirts

Quote:
Originally Posted by FBNick
Are these full cotton?

Yes - using gildan heavy 100% cotton tees.


Thanks
 
Old 1 Week Ago May 10, 2019 7:13:22 AM -   #5 (permalink)
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Default Re: Pretreatment Staining The T Shirts

Quote:
Originally Posted by teetshirts
Hi,
Relatively new to DTG printing.


We have a Epson FC2100 that we have been using for 3 months now.


I have been having issues with the pretreament leaving a stain (not press mark) around the edges of where the garment have been cured.
(Please see pics attached)


It's as if the curing is pushing the liquid in the pretreat to the outside of the heated area & pooling there to create a stain.


Has anyone here experienced this or have ideas on how to combat.


Thanks
Steve
I have seen this happen many times but first a few questions. First what pretreat is it the Epson? if it is are you diluting it enough? second how much are you spraying if you use to much it will stain. Last what temperature did you cure it at? It can pretreat can burn if the press is to hot. Also sometimes especially epson pretreat it will just stain. I personally do not use Epson pretreatment for that exact reason I use Firebird because it is a lot more forgiving and stains like 90% less than the Epson. Also I believe it is significantly cheaper than the Epson.
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Old 1 Week Ago May 10, 2019 8:40:12 AM -   #6 (permalink)
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Default Re: Pretreatment Staining The T Shirts

Quote:
Originally Posted by Ghoster32111
I have seen this happen many times but first a few questions. First what pretreat is it the Epson? if it is are you diluting it enough? second how much are you spraying if you use to much it will stain. Last what temperature did you cure it at? It can pretreat can burn if the press is to hot. Also sometimes especially epson pretreat it will just stain. I personally do not use Epson pretreatment for that exact reason I use Firebird because it is a lot more forgiving and stains like 90% less than the Epson. Also I believe it is significantly cheaper than the Epson.

Hi,


Yeah , its the Epson pretreat Fluid & I have been using the Epson basic pretreat m/c that we got with the printer.


Curing at 160 degrees.




I'll have a look at turning the curing temp down... & investigate that firebird pretreat for sure!!


Thanks for this constructive advice


Steve
 
Old 1 Week Ago May 10, 2019 12:54:08 PM -   #7 (permalink)
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Default Re: Pretreatment Staining The T Shirts

Quote:
Originally Posted by teetshirts
Hi,


Yeah , its the Epson pretreat Fluid & I have been using the Epson basic pretreat m/c that we got with the printer.


Curing at 160 degrees.




I'll have a look at turning the curing temp down... & investigate that firebird pretreat for sure!!


Thanks for this constructive advice


Steve
Just keep in mind there will always be some color shirts you cannot do at because of staining no pretreat is perfect.
 
Old 23 Hours Ago May 20, 2019 11:52:09 AM -   #8 (permalink)
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Default Re: Pretreatment Staining The T Shirts

does the stain washout when put through washing machine cycle? We have had this problem with our kornit but it washes out 99% of the time.
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Old 22 Hours Ago May 20, 2019 12:25:25 PM -   #9 (permalink)
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Default Re: Pretreatment Staining The T Shirts

Quote:
Originally Posted by nate67bus
does the stain washout when put through washing machine cycle? We have had this problem with our kornit but it washes out 99% of the time.
No the pretreat is nothing like the Kornit's it is a different set of chemistry. Kornit pretreat allows the ink to be printed directly on to it. Every other printer on the market has the pretreat dried first than the ink is printed on it. This allows for a much more vibrant print than Kornit can ever do and there are many other options on the market.
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Old 3 Hours Ago May 21, 2019 6:55:00 AM -   #10 (permalink)
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Default Re: Pretreatment Staining The T Shirts

Hi!

Very good advice from the other members.
Going a bit further, when all is tested, try to wash a couple of t-shirts before printing. Like Nate pointed out, sometimes the dyes on the t-shirt react with the pretreatment chemistry. Then, one solution would be to work with another t-shirt supplier.
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Unread 37 Minutes Ago May 21, 2019 10:16:48 AM -   #11 (permalink)
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Default Re: Pretreatment Staining The T Shirts

After I apply the pretreatment - I use a 4" paint brush (don't go cheap) and brush from left to right. I then hang the shirt and let it air dry. with this method, I've not had any pretreatment staining marks. The next day I heat set prior to printing.
 






This is a discussion about Pretreatment Staining The T Shirts that was posted in the Direct to Garment (DTG) Inkjet Printing section of the forums.

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